# NTSB CHI99LA270: Beech C23, N24670, Port Washington, WI, July 31, 1999 - Type: NTSB accident investigation - Classification: Accident · Minor injuries · Limited investigation · Final report - Date: July 30, 1999, 21:10 local (Jul 31, 1999, 02:10 UTC) - Place: Port Washington, WI - Coordinates: 43.389991, -87.869819 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=43.3900&lon=-87.8698&mi=10 - Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping) - Highest injury: Minor injuries - Injuries: 2 minor - Status: Completed, report November 30, 2000 - Report: Approved by Office Director - NTSB case key (mKey): 46907 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI99LA270 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/46907/pdf - Page: https://openairdocs.org/ntsb/CHI99LA270 ## Probable cause the loss of engine power for undetermined reasons. ## Sequence of events In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf). - Loss of engine power, cruise - reason for occurrence undetermined (cause) - Forced landing, emergency descent/landing - Ditching, emergency descent/landing ## Analysis After experiencing an engine failure, the pilot ditched the aircraft into Lake Michigan. During a telephone interview, the pilot stated that, during the flight, he noticed the fuel quantity, as indicated by the fuel gauge, was decreasing even though the fuel selector was positioned for the left tank. The pilot stated that he decided not to change fuel settings since the engine was still running. The pilot stated that while continuing to monitor the fuel status, he noticed that the right fuel tank quantity continued to decrease and the left fuel tank quantity had actually risen. The pilot stated that he continued to monitor the fuel status until the right fuel gauge read empty, at which time the engine quit. The pilot stated that he tried several times to restart the engine with differing fuel selector settings, but was unable to get the engine to run for more than a few seconds. The pilot stated that he had filled the fuel tanks prior to departure. Fuel receipts from the departure airport indicate that the aircraft was fueled with 19.6 gallons of fuel. As of December 27, 1999, the aircraft has not been recovered from Lake Michigan. ## Factual narrative On July 30, 1999, approximately 2110 central daylight time, a Beech C23, N24670, piloted by an airline transport pilot, sustained substantial damage when it impacted water approximately 4 miles east of Port Washington, Wisconsin. The personal flight was being conducted under the provisions of 14 CFR Part 91 and was not on a flight plan. The pilot and his one passenger reported minor injuries. The flight had originated from the Griffing Sandusky Airport, Sandusky, Ohio, at 1800 and was en route to the Outagamie County Regional Airport, Appleton, Wisconsin. During a telephone interview, the pilot stated that, during the flight, he noticed the fuel quantity, as indicated by the fuel gauge, was decreasing even though the fuel selector was positioned for the left tank. The pilot stated that he decided not to change fuel settings since the engine was still running. The pilot stated that he was planning to divert to Sheboygen, Wisconsin rather than continue to Appleton. The pilot stated that while continuing to monitor the fuel status, he noticed that the right fuel tank quantity continued to decrease and the left fuel tank quantity had actually risen. The pilot stated that he continued to monitor the fuel status until the right fuel gauge read empty, at which time the engine quit. The pilot stated that he tried several times to restart the engine with differing fuel selector settings, but was unable to get the engine to run for more than a few seconds. The pilot stated that he had filled the fuel tanks prior to departure. Fuel receipts from the departure airport indicate that the aircraft was fueled with 19.6 gallons of fuel. As of December 27, 1999, the aircraft has not been recovered from Lake Michigan. ## Aircraft - Registration: [N24670](https://openairdocs.org/deregistered/N24670-2017-07-20), registration cancelled 2017-07-20, S/N M-1464, built 1973 (OpenAirDocs) - Reported make and model: Beech C23 - Registry model: [Beech C23](https://openairdocs.org/model/beech-c23) (registry code 1151242) (OpenAirDocs) - Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: M-1464 - Engines: Lycoming O-360 180 horsepower reciprocating - Damage: Substantial damage - Flight: Personal, Part 91 - Registered owner: Frederick W. Forsthoefel - Airworthiness certificate: Standard, Normal - Last inspection: Annual, July 28, 1999 - Departed: SKY, SANDUSKY, OH - Destination: ATW, APPLETON, WI ## Flight crew As NTSB recorded them. NTSB leaves out names. - Pilot; age 42; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, expired; seat: left; flight hours: 3,900 total, 200 in this make and model, 6 in the last 90 days ## Weather - Conditions: Visual (VMC), Day - Wind: 230° at 8 knots - Visibility: 10 statute miles - Lowest ceiling: none - Temperature: 82 °F, dew point 75 °F - Altimeter: 29.00 inHg - Observed at: SBM, 21 nm away ## FAA reports on this event (1) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 19990730010199A](https://openairdocs.org/incident/19990730010199A), Jul 30, 1999: Beech C23, Port Washington, WI, Substantial damage. (.19) On July 30, 1999, approximately 2110 central daylight time, a Beech C23, N24670, piloted by an airline transport pilot, sustained substantial damage when… From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.